Current Electricity (NEET Physics): Questions 10 - 12 of 75
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Question number: 10
» Current Electricity » Electric Cell and Its Internal Resistance
In the circuit shown below, if the value of R is increased then what will be the effect on the reading of ammeter if the internal resistance of cell is negligible-
The reading of ammeter will decrease
The reading of ammeter will increase
The reading of ammeter will become zero.
The reading of ammeter will remain unchanged
Question number: 11
» Current Electricity » Electrical Resistance
In the circuit shown, the galvanometer G reads zero. If batteries have negligible internal resistances, the value of resistance X will be –
Question number: 12
» Current Electricity » Temperature Dependence of Resistance
The temperature coefficient of resistance is positive for metals and negative for p-type semiconductor.
The effective charge carriers in metals are negatively charged whereas in p-type semiconductor they are positively charged.
|a.||Both Ꭺ and Ꭱ are false|
|b.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
|c.||Ꭺ is true but Ꭱ is false|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|