Physics Past Questions and Answers

A cell can supply current of 0.4 A and 0.2 A through a 4.0Ω and 10.0Ω resistors respectively.<br/>This internal resistance of the cell is

The particles emitted when \( ^{39}_{19}K \text{ decay to } ^{39}_{19}K \) is

I. Low pressure.<br/>II. High pressure.<br/>III. High p.d.<br/>IV. Low p.d.<br/>Which combination of the above is true of the conduction of electricity through gases?

The current through a resistor in an a.c circuit is given as 2 sin wt. Determine the d.c. equivalent of the current

I. Low pressure.<br/>II. High pressure.<br/>III. High p.d.<br/>IV. Low p.d.<br/>Which combination of the above is true of the conduction of electricity through gases?