Q.1.
How is the current of a resistor related to the potential difference across it?
Q.2.
An LED emits light when the current flows through it in which direction?
Q.3.
If two resistors are connected in parallel in a circuit, which has a total electrical potential difference of five volts, what is the value of the electrical potential difference across each resistor?
Q.4.
Which equation correctly relates voltage, resistance and current?
Q.5.
If a 100 ohm resistor is replaced with a 200 ohm resistor, whilst the potential difference is kept constant, what happens to the current?
Q.6.
The current through a component depends on which of the following?
Q.7.
If three 1.5V cells are connected in series, what is the total potential difference provided by the cells?
Q.8.
What is the unit of resistance?
Q.9.
If two five ohm resistors are connected in series, what is the total resistance of the circuit?
Q.10.
What can be found by measuring current and voltage?