# Physics equations/19-Electric Potential and Electric Field/Q:KE&PE/Testbank

## a19ElectricPotentialField_KE_PE_v1

How fast is a 2642 eV electron moving?

 a) 3 x 107 m/s. b) 4.6 x 107 m/s. c) 6.9 x 107 m/s. d) 1 x 108 m/s. e) 1.5 x 108 m/s.

copies
===2===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2212 eV electron moving?}
-a) 8.3 x 10<sup>6</sup> m/s.
-b) 1.2 x 10<sup>7</sup> m/s.
-c) 1.9 x 10<sup>7</sup> m/s.
+d) 2.8 x 10<sup>7</sup> m/s.
-e) 4.2 x 10<sup>7</sup> m/s.
===3===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2928 eV electron moving?}
-a) 6.3 x 10<sup>6</sup> m/s.
-b) 9.5 x 10<sup>6</sup> m/s.
-c) 1.4 x 10<sup>7</sup> m/s.
-d) 2.1 x 10<sup>7</sup> m/s.
+e) 3.2 x 10<sup>7</sup> m/s.
===4===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2952 eV electron moving?}
-a) 6.4 x 10<sup>6</sup> m/s.
-b) 9.5 x 10<sup>6</sup> m/s.
-c) 1.4 x 10<sup>7</sup> m/s.
-d) 2.1 x 10<sup>7</sup> m/s.
+e) 3.2 x 10<sup>7</sup> m/s.
===5===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2355 eV electron moving?}
-a) 1.9 x 10<sup>7</sup> m/s.
+b) 2.9 x 10<sup>7</sup> m/s.
-c) 4.3 x 10<sup>7</sup> m/s.
-d) 6.5 x 10<sup>7</sup> m/s.
-e) 9.7 x 10<sup>7</sup> m/s.
===6===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2672 eV electron moving?	}
-a) 6.1 x 10<sup>6</sup> m/s.
-b) 9.1 x 10<sup>6</sup> m/s.
-c) 1.4 x 10<sup>7</sup> m/s.
-d) 2 x 10<sup>7</sup> m/s.
+e) 3.1 x 10<sup>7</sup> m/s.
===7===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2663 eV electron moving?}
+a) 3.1 x 10<sup>7</sup> m/s.
-b) 4.6 x 10<sup>7</sup> m/s.
-c) 6.9 x 10<sup>7</sup> m/s.
-d) 1 x 10<sup>8</sup> m/s.
-e) 1.5 x 10<sup>8</sup> m/s.
===8===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2493 eV electron moving?}
-a) 1.3 x 10<sup>7</sup> m/s.
-b) 2 x 10<sup>7</sup> m/s.
+c) 3 x 10<sup>7</sup> m/s.
-d) 4.4 x 10<sup>7</sup> m/s.
-e) 6.7 x 10<sup>7</sup> m/s.
===9===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2648 eV electron moving?}
+a) 3.1 x 10<sup>7</sup> m/s.
-b) 4.6 x 10<sup>7</sup> m/s.
-c) 6.9 x 10<sup>7</sup> m/s.
-d) 1 x 10<sup>8</sup> m/s.
-e) 1.5 x 10<sup>8</sup> m/s.
===10===
{<!--a19ElectricPotentialField_KE_PE_1-->How fast is a 2758 eV electron moving?}
-a) 9.2 x 10<sup>6</sup> m/s.
-b) 1.4 x 10<sup>7</sup> m/s.
-c) 2.1 x 10<sup>7</sup> m/s.
+d) 3.1 x 10<sup>7</sup> m/s.
-e) 4.7 x 10<sup>7</sup> m/s.

## a19ElectricPotentialField_KE_PE_v1

A proton is accelerated (at rest) from a plate held at 45.3 volts to a plate at zero volts. What is the final speed?

 a) 2.8 x 104 m/s. b) 4.1 x 104 m/s. c) 6.2 x 104 m/s. d) 9.3 x 104 m/s. e) 1.4 x 105 m/s.

copies
===2===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accelerated (at rest) from a plate held at 552.1 volts to a plate at zero volts.  What is the final speed?}
+a) 3.3 x 10<sup>5</sup> m/s.
-b) 4.9 x 10<sup>5</sup> m/s.
-c) 7.3 x 10<sup>5</sup> m/s.
-d) 1.1 x 10<sup>6</sup> m/s.
-e) 1.6 x 10<sup>6</sup> m/s.
===3===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accelerated (at rest) from a plate held at 333.6 volts to a plate at zero volts.  What is the final speed?}
-a) 1.1 x 10<sup>5</sup> m/s.
-b) 1.7 x 10<sup>5</sup> m/s.
+c) 2.5 x 10<sup>5</sup> m/s.
-d) 3.8 x 10<sup>5</sup> m/s.
-e) 5.7 x 10<sup>5</sup> m/s.
===4===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 767.8 volts to a plate at zero volts.  What is the final speed?}
-a) 1.1 x 10<sup>5</sup> m/s.
-b) 1.7 x 10<sup>5</sup> m/s.
-c) 2.6 x 10<sup>5</sup> m/s.
+d) 3.8 x 10<sup>5</sup> m/s.
-e) 5.8 x 10<sup>5</sup> m/s.
===5===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 4.7 volts to a plate at zero volts.  What is the final speed?}
-a) 5.9 x 10<sup>3</sup> m/s.
-b) 8.9 x 10<sup>3</sup> m/s.
-c) 1.3 x 10<sup>4</sup> m/s.
-d) 2 x 10<sup>4</sup> m/s.
+e) 3 x 10<sup>4</sup> m/s.
===6===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 318.6 volts to a plate at zero volts.  What is the final speed?	}
-a) 1.6 x 10<sup>5</sup> m/s.
+b) 2.5 x 10<sup>5</sup> m/s.
-c) 3.7 x 10<sup>5</sup> m/s.
-d) 5.6 x 10<sup>5</sup> m/s.
-e) 8.3 x 10<sup>5</sup> m/s.
===7===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 775.8 volts to a plate at zero volts.  What is the final speed?}
-a) 7.6 x 10<sup>4</sup> m/s.
-b) 1.1 x 10<sup>5</sup> m/s.
-c) 1.7 x 10<sup>5</sup> m/s.
-d) 2.6 x 10<sup>5</sup> m/s.
+e) 3.9 x 10<sup>5</sup> m/s.
===8===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 39.7 volts to a plate at zero volts.  What is the final speed?}
-a) 3.9 x 10<sup>4</sup> m/s.
-b) 5.8 x 10<sup>4</sup> m/s.
+c) 8.7 x 10<sup>4</sup> m/s.
-d) 1.3 x 10<sup>5</sup> m/s.
-e) 2 x 10<sup>5</sup> m/s.
===9===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 588.2 volts to a plate at zero volts.  What is the final speed?}
-a) 6.6 x 10<sup>4</sup> m/s.
-b) 10 x 10<sup>4</sup> m/s.
-c) 1.5 x 10<sup>5</sup> m/s.
-d) 2.2 x 10<sup>5</sup> m/s.
+e) 3.4 x 10<sup>5</sup> m/s.
===10===
{<!--a19ElectricPotentialField_KE_PE_2-->A proton is accellerated (at rest) from a plate held at 729.8 volts to a plate at zero volts.  What is the final speed?}
-a) 1.7 x 10<sup>5</sup> m/s.
-b) 2.5 x 10<sup>5</sup> m/s.
+c) 3.7 x 10<sup>5</sup> m/s.
-d) 5.6 x 10<sup>5</sup> m/s.
-e) 8.4 x 10<sup>5</sup> m/s.

## a19ElectricPotentialField_KE_PE_v1

What voltage is required accelerate an electron at rest to a speed of 9.4 x 106 m/s?

 a) 7.4 x 101 volts b) 1.1 x 102 volts c) 1.7 x 102 volts d) 2.5 x 102 volts e) 3.8 x 102 volts

copies
===2===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 9.7 x 10<sup>4</sup> m/s?}
-a) 1.8 x 10<sup>-2</sup> volts
+b) 2.7 x 10<sup>-2</sup> volts
-c) 4 x 10<sup>-2</sup> volts
-d) 6 x 10<sup>-2</sup> volts
-e) 9 x 10<sup>-2</sup> volts
===3===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 1.7 x 10<sup>5</sup> m/s?}
-a) 1.6 x 10<sup>-2</sup> volts
-b) 2.4 x 10<sup>-2</sup> volts
-c) 3.7 x 10<sup>-2</sup> volts
-d) 5.5 x 10<sup>-2</sup> volts
+e) 8.2 x 10<sup>-2</sup> volts
===4===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 3 x 10<sup>5</sup> m/s?}
-a) 1.7 x 10<sup>-1</sup> volts
+b) 2.6 x 10<sup>-1</sup> volts
-c) 3.8 x 10<sup>-1</sup> volts
-d) 5.8 x 10<sup>-1</sup> volts
-e) 8.6 x 10<sup>-1</sup> volts
===5===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 2.8 x 10<sup>3</sup> m/s?}
-a) 4.4 x 10<sup>-6</sup> volts
-b) 6.6 x 10<sup>-6</sup> volts
-c) 9.9 x 10<sup>-6</sup> volts
-d) 1.5 x 10<sup>-5</sup> volts
+e) 2.2 x 10<sup>-5</sup> volts
===6===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 9.5 x 10<sup>6</sup> m/s?	}
-a) 1.1 x 10<sup>2</sup> volts
-b) 1.7 x 10<sup>2</sup> volts
+c) 2.6 x 10<sup>2</sup> volts
-d) 3.8 x 10<sup>2</sup> volts
-e) 5.8 x 10<sup>2</sup> volts
===7===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 5.6 x 10<sup>4</sup> m/s?}
-a) 5.9 x 10<sup>-3</sup> volts
+b) 8.9 x 10<sup>-3</sup> volts
-c) 1.3 x 10<sup>-2</sup> volts
-d) 2 x 10<sup>-2</sup> volts
-e) 3 x 10<sup>-2</sup> volts
===8===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 7.6 x 10<sup>7</sup> m/s?}
-a) 3.2 x 10<sup>3</sup> volts
-b) 4.9 x 10<sup>3</sup> volts
-c) 7.3 x 10<sup>3</sup> volts
-d) 1.1 x 10<sup>4</sup> volts
+e) 1.6 x 10<sup>4</sup> volts
===9===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 5.5 x 10<sup>5</sup> m/s?}
-a) 2.5 x 10<sup>-1</sup> volts
-b) 3.8 x 10<sup>-1</sup> volts
-c) 5.7 x 10<sup>-1</sup> volts
+d) 8.6 x 10<sup>-1</sup> volts
-e) 1.3 x 10<sup>0</sup> volts
===10===
{<!--a19ElectricPotentialField_KE_PE_3-->What voltage is required accelerate an electron at rest to a speed of 1.5 x 10<sup>3</sup> m/s?}
-a) 1.9 x 10<sup>-6</sup> volts
-b) 2.8 x 10<sup>-6</sup> volts
-c) 4.3 x 10<sup>-6</sup> volts
+d) 6.4 x 10<sup>-6</sup> volts
-e) 9.6 x 10<sup>-6</sup> volts

## a19ElectricPotentialField_KE_PE_v1

What voltage is required to stop a proton moving at a speed of 8.5 x 104 m/s?

 a) 7.4 x 100 volts b) 1.1 x 101 volts c) 1.7 x 101 volts d) 2.5 x 101 volts e) 3.8 x 101 volts

copies
===2===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 3 x 10<sup>4</sup> m/s?}
-a) 1.4 x 10<sup>0</sup> volts
-b) 2.1 x 10<sup>0</sup> volts
-c) 3.1 x 10<sup>0</sup> volts
+d) 4.7 x 10<sup>0</sup> volts
-e) 7 x 10<sup>0</sup> volts
===3===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 8.1 x 10<sup>6</sup> m/s?}
-a) 2.3 x 10<sup>5</sup> volts
+b) 3.4 x 10<sup>5</sup> volts
-c) 5.1 x 10<sup>5</sup> volts
-d) 7.7 x 10<sup>5</sup> volts
-e) 1.2 x 10<sup>6</sup> volts
===4===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 3.9 x 10<sup>3</sup> m/s?}
-a) 3.5 x 10<sup>-2</sup> volts
-b) 5.3 x 10<sup>-2</sup> volts
+c) 7.9 x 10<sup>-2</sup> volts
-d) 1.2 x 10<sup>-1</sup> volts
-e) 1.8 x 10<sup>-1</sup> volts
===5===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 7.6 x 10<sup>6</sup> m/s?}
+a) 3 x 10<sup>5</sup> volts
-b) 4.5 x 10<sup>5</sup> volts
-c) 6.8 x 10<sup>5</sup> volts
-d) 1 x 10<sup>6</sup> volts
-e) 1.5 x 10<sup>6</sup> volts
===6===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 4.2 x 10<sup>3</sup> m/s?	}
-a) 6.1 x 10<sup>-2</sup> volts
+b) 9.2 x 10<sup>-2</sup> volts
-c) 1.4 x 10<sup>-1</sup> volts
-d) 2.1 x 10<sup>-1</sup> volts
-e) 3.1 x 10<sup>-1</sup> volts
===7===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 8 x 10<sup>7</sup> m/s?}
+a) 3.3 x 10<sup>7</sup> volts
-b) 5 x 10<sup>7</sup> volts
-c) 7.5 x 10<sup>7</sup> volts
-d) 1.1 x 10<sup>8</sup> volts
-e) 1.7 x 10<sup>8</sup> volts
===8===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 1.6 x 10<sup>4</sup> m/s?}
-a) 4 x 10<sup>-1</sup> volts
-b) 5.9 x 10<sup>-1</sup> volts
-c) 8.9 x 10<sup>-1</sup> volts
+d) 1.3 x 10<sup>0</sup> volts
-e) 2 x 10<sup>0</sup> volts
===9===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 8.1 x 10<sup>4</sup> m/s?}
+a) 3.4 x 10<sup>1</sup> volts
-b) 5.1 x 10<sup>1</sup> volts
-c) 7.7 x 10<sup>1</sup> volts
-d) 1.2 x 10<sup>2</sup> volts
-e) 1.7 x 10<sup>2</sup> volts
===10===
{<!--a19ElectricPotentialField_KE_PE_4-->What voltage is required to stop a proton moving at a speed of 5.2 x 10<sup>7</sup> m/s?}
-a) 9.4 x 10<sup>6</sup> volts
+b) 1.4 x 10<sup>7</sup> volts
-c) 2.1 x 10<sup>7</sup> volts
-d) 3.2 x 10<sup>7</sup> volts
-e) 4.8 x 10<sup>7</sup> volts