Download App

Science True-False [Phy-1M]

Electricity · CBSE STD 10 (CBSE - English Medium). 3 questions.

Questions

True-False [Phy-1M]

🎯

Test yourself on this topic

3 questions · timed · auto-graded

Question 11 Mark
When resistors are connected in series, the sum of the currents in them is the current drawn from cell. [True/ False]
Answer
True.
Explanation:
The same current flows through each resistor in series. Individual resistors in series do not get the total source voltage, but divide it. The total resistance in a series circuit is equal to the
sum of the individual resistances: RN(series) = R1 + R2 + R3 + … + RN.
View full question & answer→
Question 21 Mark
When resistors are connected in parallel, the sum of the currents in them is the current drawn from cell. [True/ False]
Answer
True.
Explanation:
To calculate the total overall resistance of a number of resistors connected in this way you add up the individual resistances. This is done using the following formula:
R total = R1 + R2 + R3
View full question & answer→
Question 31 Mark
The nature of increase/decrease in resistivity of a metal and insulator are the same. [True/ False]
Answer
True.
Explanation:
For semiconductors and insulators, the charge density increases when the temperature is increased. It compensates the decrease in the value. Hence the resistivity decreases when the
temperature decreases.
View full question & answer→
Generate Paper FreeAll Electricity topics
True-False [Phy-1M] - Science STD 10 Questions - Vidyadip