Electrical Science

What is Current Represented as ?

• R

• V

• I

• P

What is resistance measured in ?

• Volts

• Ohms

• Amps

• Watts

Fill in the blank: V = ........... X R ?

Which formula is used to calculate Power when you have the value of voltage and resistance ?

• V2/R

• V/R

• RXI2

• 2+2

You have a voltage of 230volts and a resistance of 0.25ohms, what is the current?

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The definition of resistivity is ?

• The resistance of the flow of power

• The resistance of the flow of voltage

• The resistance of the flow of current

• How hard you can hit something with a hammer

The formula of resistivity is

• R=LxA/p

• p=RxA/L

• L=RxAxp

• RxA/pxL

Calculate the resistivity when resistance is 2ohms, the area is 25cm2 and the length is 15cm ?

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What formula is used to calculate Power when you have the values for Current and Voltage ?

• P=I2xV

• P=VxI

• P=V2/I

• P=V2/I2

Increasing the length of a conductor will ....

• Decrease the resistance

• Double the resistance

• Half the resistance

• Increase the resistance