# In the Straight Wire A, Current is Flowing in the Vertically Downwards Direction Whereas in Wire B The Current is Flowing in the Vertically Upward Direction. What is the Direction of Magnetic Field: - Science

In the straight wire A, current is flowing in the vertically downwards direction whereas in wire B the current is flowing in the vertically upward direction. What is the direction of magnetic field:

(a) in wire A?
(b) in wire B?
Name the rule which you have used to get the answer.

#### Solution

We will use right-hand thumb rule to get the answer.

(a) In the straight wire A, current is flowing in vertically downwards direction; therefore, the direction of magnetic field around it will be clockwise.

(b) In the straight wire B, current is flowing in vertically upwards direction; therefore, the direction of magnetic field around it will be anticlockwise.

Concept: Magnetic Field Lines
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#### APPEARS IN

Lakhmir Singh Class 10 Physics (Science)
Chapter 2 Magnetic Effects of Electric Current
Q 37 | Page 84