Question
Physics Question on Magnetic Effects of Current and Magnetism
A wire carrying current I, bent as shown in the figure, is placed in a uniform magnetic field B that emerges normally out from the plane of the figure. The force on this wire is ______
Fill in the blank with the correct answer from the options given below.
A
4BIR, directed vertically downward
B
3BIR, directed vertically upward
C
BI(2R + πR), vertically downward
D
2πBIR, from P to Q
Answer
4BIR, directed vertically downward
Explanation
Solution
The force on a current-carrying wire in a uniform magnetic field is given by 4BIR, directed vertically downward. Hence, the correct answer is Option 1.