Pls explain me step by step
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Pls explain me step by step
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Question :
A magnetic field in a certain region is given by
How much flux passes through a 5cm² are loop if the loop lies flat on xy - plane
A) -900 nwb
B) -700 nwb
C) -200 nwb
D) -800 nwb
Answer :
We know that, 1 G = 10‾⁴ T
∴ (40i - 18k)G = (40i - 18k)×10‾⁴ T
Area = 5 cm² = 5 × 10‾⁴ m²
Direction of area vector = k
★ Magnetic flux passing through a surface placed in magnetic field is given by
∅ denotes magnetic flux
B denotes magnetic field
A denotes area
➝ ∅ = B • A
➝ ∅ = (40i-18k)×10‾⁴ • (5×10‾⁴)k
➝ ∅ = -18 × 5 × 10‾⁸
➝ ∅ = -90 × 10‾⁸
➝ ∅ = -900 nwb
∴ (A) is the correct answer!
Verified answer
Answer:
sorry yar pic is not clear .....
Explanation:
plz take it pic again than send it ......