Basic Electricity

What is Ohm's Law?

• V=I×R

• V=I+R

• V=I÷R

• V=R÷I

According to Kirchhoff's Current Law, what is the sum of currents entering a junction?

• Zero

• Equal to the sum of currents leaving the junction

• Equal to the applied voltage

• Equal to the resistance

What is the unit of electrical resistance?

What does a DC generator produce?

What device automatically cuts off the current in case of an overload or short circuit?

Which device converts mechanical energy into electrical energy using electromagnetic induction?

What does a voltmeter measure?

What does a circuit breaker do in the event of a circuit overload?

Which material is commonly used for electrical conductors?

What is the main function of a switch in an electrical circuit?