Which statement correctly defines current?

Which term is a unit of current?

What is the formula of current?

What is electromotive force?

What is potential difference?

Which term is a unit of potential difference?

What is the formula of voltage?

What unit is used to measure resistance?

A circuit has 1250 C flowing through it for 25 s.

What is the current in the circuit?

What is the time taken when 1500 C of charge flows through a fixed point to give a current of 10 A?

In a complete circuit, the work done by an electrical energy source in moving an electric charge of 5.0 C from terminal X to terminal Y is 3.5 J.

Determine the e.m.f. of the electrical energy source.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

A series circuit is shown.

When 2 C of charge passes round the circuit, 6 J of work drives the charge through component S and 6 J through component T.

What is the electromotive force (e.m.f) of the cell?

The diagram shows a circuit containing a lamp and three resistors.

What is the total resistance in this circuit?

The diagram shows four circuits using resistors of the same value.

Which circuit has the least effective resistance?

Four lamps and four switches are connected to a power supply as shown in the circuit diagram.

When all the switches are closed, all the lamps are lit.

When one of the switches is then opened, only one lamp goes out.

Which switch is opened?

The diagram shows a circuit with a 3.0 ohm resistor and a 2.0 ohm resistor connected in parallel.

The switch is open and the ammeter reads 2.0 A.

When the switch is closed, the ammeter reads the total current through both resistors.

What is the ammeter reading when the switch is closed?

Two 10 Ω resistors are connected in parallel, their equivalent resistance is

Four resistors are connected as shown. What is the total resistance of this arrangement?

A wire of length 2.0 m and cross-sectional area 0.50 x 10^-6 m² has a resistance of 1.2 Ω.

Another wire of the same material has a length of 0.50 m and a cross-sectional area of

1.0 X 10^-6m².

What is the resistance of the shorter wire?

What is the equation for calculating the electrical power produced in a resistor?

A student draws a circuit, shown below, to show how an appliance should be connected to a fuse and the household mains.

Identify the error in the circuit.

In a household electrical circuit, why are fuses and switches always placed in the live wire?

Where should a fuse always be connected?

how does earth wire work to protect the users?