1 Which of the following quantities has units of Joules per Coulomb?
a Electric current
b Voltage
c Power
d Resistance
2 Which circuit would be best used to find the unknown resistance ...... where the symbols have their usual meanings.
3 Four sets of identical resistors are connected in parallel.
The greatest heat per second is generated in which vertical branch of the circuit?
4 Which of the following devices has electrical capacitance.
a Two parallel metal plates.
b A hollow metal sphere.
c A small metal bucket.
d All of the above.
5 The kilowatt hour is a unit of..........
a Current.
b Power.c Energy.
d Voltage.
6 Four electrical meters are available. Which would you expect to have the largest series resistance.
a A digital ohm meter.
b A moving coil galvanometer.
c A moving coil volt meter.
d A digital volt meter.
7 A current of 5 Amperes flows in a resistance of 6 Ohms. The voltage measured across the resistor is........
a 5 Volts.
b 6 Volts.
c 30 Volts.
d 150 volts.
Questions 8 - 10 refer to the circuit diagram below which
shows three identical resistors connected to a battery with EMF
6 Volts and two Volt meters.
8 Which statement is correct.
a The voltage measured across the battery is less than 6 volts because current is being drawn.
b The voltage measured across each resistor is the same.
c The internal resistance of the battery is zero.
d The power dissipated in each identical resistor is the same.
9 The reading on the blank volt meter is.........
a 6 V
b 12 V
c 18 V
d zero
10 A second battery with the same EMF but with internal resistance is substituted for the battery shown. Which of the following statements is incorrect.
a The readings on both volt meters will be reduced.
b Less power will be dissipated in the resistor.
c The new battery will get warm as current is drawn.
d The new battery will deliver less current to the circuit.