Question

A bar magnet of length 10cm and pole strength
20A-m is deflected through 30° from the magnetic
meridian. If earth's horizontal component field is
320/4pi
A/m. The moment of the deflecting couple is

1) 160x10-7Nm

2) 320 x10^7 Nm

3) 320pi 10^-7Nm

4) 160pi X10-7Nm​

Answer 1

Explanation:

A bar magnet of length 10cm and pole strength

20A-m is deflected through 30° from the magnetic

meridian. If earth's horizontal component field is

320/4pi

A/m. The moment of the deflecting couple is

1) 160x10-7Nm

2) 320 x10^7 Nm

3) 320pi 10^-7Nm

4) 160pi X10-7NmA bar magnet of length 10cm and pole strength

20A-m is deflected through 30° from the magnetic

meridian. If earth's horizontal component field is

320/4pi

A/m. The moment of the deflecting couple is

1) 160x10-7Nm

2) 320 x10^7 Nm

3) 320pi 10^-7Nm

4) 160pi X10-7NmA bar magnet of length 10cm and pole strength

20A-m is deflected through 30° from the magnetic

meridian. If earth's horizontal component field is

320/4pi

A/m. The moment of the deflecting couple is

1) 160x10-7Nm

2) 320 x10^7 Nm

3) 320pi 10^-7Nm

4) 160pi X10-7NmA bar magnet of length 10cm and pole strength

20A-m is deflected through 30° from the magnetic

meridian. If earth's horizontal component field is

320/4pi

A/m. The moment of the deflecting couple is

1) 160x10-7Nm

2) 320 x10^7 Nm

3) 320pi 10^-7Nm

4) 160pi X10-7NmA bar magnet of length 10cm and pole strength

20A-m is deflected through 30° from the magnetic

meridian. If earth's horizontal component field is

320/4pi

A/m. The moment of the deflecting couple is

1) 160x10-7Nm

2) 320 x10^7 Nm

3) 320pi 10^-7Nm

4) 160pi X10-7Nm