Circuit Diagram

Draw an electric circuit for measuring electric current and potential difference across a resistance 'R'.

Should the resistance of a voltmeter be low or high? Give reason.

Calculate the value of current $\mathrm{I}$ in given circuit.

Draw a schematic diagrams of an electric circuit comprising of $3$ cells and an electric bulb, ammeter, plug-key in the ON mode and another with same components but with two bulbs in parallel and a voltmeter across the combination.
 

Give examples of resistors that are used in daily life.

Explain the difference between the following-

ammeter and voltmeter

Electric current is measured with a voltmeter.

Voltmeter is connected in series in the circuit.

Ammeter measures

Which one of the following devices is used to measure electric current?

Potentiometer can serve as a rheostat.

Resistance increases by increasing the _________ of the coil carrying the current in a rheostat.

The slider provided on a rheostat changes the

Rheostat is a variable resistor.