Physics Past Questions and Answers

When an ebolite rod is rubbed with fur, it has

Which of the following factors has no effect on the e.m.f. of a primary cell?

A wire of length 15m made of a material of resistivity 1.8 x 10^-6\(\Omega\)m has a resistance of 0.27\(\Omega\). Determine the area of the wire

A 5-v battery is connected across the plates of a 2.0\(\mu\)F uncharged parallel plate capacitor. The charge on the capacitor after a long time is

Which of the following apparatus will require the smallest fuse rating for its protection?