Q. If a glass rod is rubbed with silk cloth, the glass rod acquires a positive charge of 12.8 C. Calculate number of electrons transferred. Which way these electrons move. Charge on electron = 1.6 x C.
Q. What current flows in a resistance of 2kohm when
(i) a p.d. of 9 V and
(ii) a p.d of 6 mV is applied one by one?
Q. What do you mean by electric potential. Explain it by taking the analogy to liquid flow and heat flow.
Q. A current of 5 mA flows through solution for 40s. How many Cu' ' ions will deposit on cathode of the apparatus?
