Write the function and symbol of a rheostat.
Write symbols and state functions of each of the following components in an electric circuit:
(i) key, (ii) cell, (iii) rheostat, (iv) ammeter, and (v) voltmeter.
What is a rheostat symbol?
Draw the symbol of the rheostat, voltmeter, and electric bulb.
Which of the following is the symbol of a rheostat?
Write the function and symbol of a voltmeter.