Q14.The magnetic moments associated with two closely wound circular coils π΄ and π΅ of radius ππ΄= 10 cm and ππ΅= 20 cm respectively are equal if: (Where ππ΄, πΌπ΄ and ππ΅, πΌπ΅ are number of turn and current of π΄ and π΅ respectively) (1) 2ππ΄πΌπ΄= ππ΅πΌπ΅ (2) ππ΄= 2ππ΅ (3) ππ΄πΌπ΄= 4ππ΅πΌπ΅ (4) 4ππ΄πΌπ΄= ππ΅πΌπ΅
What This Question Tests
This question tests the definition and calculation of magnetic dipole moment for a current loop, specifically how it depends on turns, current, and area.
Concepts Tested
Formulas Used
M = NIA
π NCERT Sections This Tests
4.10 β Two Moving Coil Meters, M1 And M2 Have The Following Particulars:
Physics Class 11 Β· Chapter 4
4.10 Two moving coil meters, M1 and M2 have the following particulars: R1 = 10 β¦, N1 = 30, A1 = 3.6 Γ 10β3 m2, B1 = 0.25 T R2 = 14 β¦, N2 = 42, A2 = 1.8 Γ 10β3 m2, B2 = 0.50 T (The spring constants are identical for the two meters). Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M2 and M1.
4.9 β A Square Coil Of Side 10 Cm Consists Of 20 Turns And Carries A Current
Physics Class 11 Β· Chapter 4
4.9 A square coil of side 10 cm consists of 20 turns and carries a current of 12 A. The coil is suspended vertically and the normal to the plane of the coil makes an angle of 30ΒΊ with the direction of a uniform horizontal magnetic field of magnitude 0.80 T. What is the magnitude of torque experienced by the coil?
4.8 β A Closely Wound Solenoid 80 Cm Long Has 5 Layers Of Windings Of 400
Physics Class 11 Β· Chapter 4
4.8 A closely wound solenoid 80 cm long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 1.8 cm. If the current carried is 8.0 A, estimate the magnitude of B inside the solenoid near its centre.
π Question Details
- Chapter
- Magnetic Effects of Current
- Topic
- Magnetic dipole moment
- Year
- 2023
- Shift
- 30 Jan Shift 1
- Q Number
- Q14
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 4: Moving Charges and Magnetism
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