What can be found by measuring current and voltage?
0%
Resistivity
89%
Resistance
0%
The direction of true north
11%
Magnetic field strength
Q.2.
Which equation correctly relates voltage, resistance and current?
10%
R = I⁄V
20%
V= I⁄R
0%
I = R⁄V
70%
V = I R
Q.3.
How is the current of a resistor related to the potential difference across it?
38%
Inversely proportional
50%
Directly proportional
12%
Equal
0%
One-fifth of the potential difference
Q.4.
The current through a component depends on which of the following?
83%
The resistance of the component
17%
The size of the component
0%
The material of the component
0%
The colour of the component
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?
17%
Stays the same
17%
Increases
67%
Decreases
0%
There is not enough information
Q.6.
If two five ohm resistors are connected in series, what is the total resistance of the circuit?
0%
5 ohms
100%
10 ohms
0%
2.5 ohms
0%
7.5 ohms
Q.7.
An LED emits light when the current flows through it in which direction?
75%
Forwards
0%
Backwards
25%
No current flow
0%
Up and down
Q.8.
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?
0%
2.5 V
0%
1.25 V
100%
5 V
0%
10 V
Q.9.
If three 1.5V cells are connected in series, what is the total potential difference provided by the cells?
25%
3 V
50%
4.5 V
0%
5.5 V
25%
1.5 V
Q.10.
What is the unit of resistance?
75%
Ohm
0%
Volt
25%
Ampere
0%
Coulomb
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.