Quiz Lesson 4 and 5

This law is named after the German Mathematician George Simon ohm who first enunciated it in 1827.

• Ohmic law

• Ohms law

• Omhs law

• simons law

A ____________________ is a device that provides resistance in an electric circuit. Resistance is the property of circuit element which offers opposing or hindrance to the flow of current and in the process electrical energy is converted in to heat energy.

A _____________ is a device that can store energy in the form of a charge separation when it is suitably polarized by an electric field by applying voltage across it.

1. A 230 volts’ tester has a resistance of 23ohms What would be the minimum rating of the fuse in the electric circuit for using the tester?

• 8 amps

• 15 amps

• 12 amps

• 10 amps

1. The potential difference between the terminals of an incandescent lampis 220 volts and the current is 0.22 amp. What is the resistance of the lamp?

• 10

• 1000

• 100

• 1001

Ohm’s law state that” The higher the voltage, the _____________the current and the higher the resistance, the lower the current.”

• lower

• larger

• smaller

• higher

The Vertical line indicates _______________of quantities on either side of the line.

The horizontal line implies ________________of the bottom quantity with the value at the top.

• division

• subtraction

• addittion

• divide

.It is specifically the rate at which work is done, or at the rate at which heat is generated. The unit commonly used to specify electric power is Watts. In equation you find power abbreviated in the letter W.

• work

• rate

• power

• watts

A battery of negligible resistance is connected to a coil of 20 ohms resistance. What must be the battery emf in order that a current of 1.5 amp may flow the circuit.

• 20 volts

• 10 volts

• 15 volts

• 30 volts