Physics Past Questions and Answers

A positively charged glass rod is placed near the cap of a positively charged electroscope. The divergence of the leaf is observed to

Capacitors are used in the following devices, except

Use the diagram above to calculate the current, I.

Determine the potential difference. V across the parallel resistors

A galvanometer of internal resistance 50\(\Omega\) and full scale deflection of 20 mA is converted into a voltmeter by connecting a resistor of resistance 1950\(\Omega\) in series to it. Calculate the maximum voltage that can be read by the voltmeter