A simple circuit consists of a resistor, a battery, and connecting wires.

Draw the circuit diagram.

A simple circuit consists of a resistor, a battery, and connecting wires.

How must a voltmeter be connected to a resistor in order to read the potential difference across it?

A simple circuit consists of a resistor, a battery, and connecting wires.

How must an ammeter be connected in a circuit to correctly read the current?

A wire of given material having length l and area of cross-section A, has a resistance of 2 Ω. Find the resistance of another wire of same material having length 2l and are of cross-section A/2.

Calculate the ratio of the equivalent resistance of the above two wires in parallel combination to that in series combination.