Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?

Important Questions on Electricity

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 30

In an electric circuit with a resistance wire and a cell, the current flowing is

I .

What would happen to this current if the wire is replaced by another thicker wire of same material and same length? Give reason.

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 31

Define resistivity and state its S.I. unit. Does it vary with temperature?

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 32

Chemical cells or dynamos do not produce electrons. How do they produce current electricity?

MEDIUM

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 33

Name two devices which can produce continuous current. Which form of energy is responsible for the generation of electric current in the devices named by you?

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 34

How are ammeters and voltmeters connected in a circuit? What do they help us measure?

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 35

A wire is cut into two equal parts and then connected in parallel. How will its resistance get affected?

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 35

A wire is cut into two equal parts and then connected in parallel. How will its resistivity get affected?

EASY

10th CBSE

IMPORTANT

ESSENTIALS OF PHYSICS CLASS X>Chapter 3 - Electricity>Assignment-3>Q 36

Two students perform experiments on two given resistors $R_{1}$ and $R_{2}$ and plot the following $V$ - $I$ graphs. If $R_{1} > R_{2},$ which of two diagrams correctly represent the situation on the plotted curves? Justify your answer.