The electric field of an electromagnetic wave in free space is represented by . The corresponding magnetic induction vector will be

Question

The electric field of an electromagnetic wave in free space is represented by $\vec{E} = E_{0} \cos (ω t - k z) \hat{i}$ . The corresponding magnetic induction vector will be

Smart Achievers · Accepted Answer

(2)

$\vec{E} \times \vec{B} gives direction of \vec{V}$

Solution

Q.
The electric field of an electromagnetic wave in free space is represented by $\vec{E} = E_{0} \cos (ω t - k z) \hat{i}$ . The corresponding magnetic induction vector will be

1 $\vec{B} = (E_{0} C) \cos (ω t - k z) \hat{j}$

2 $\vec{B} = (\frac{E_{0}}{C}) \cos (ω t - k z) \hat{j}$

3 $\vec{B} = E_{0} \cos (ω t + k z) \hat{j}$

4 $\vec{B} = - (\frac{E_{0}}{C}) \cos (ω t - k z) \hat{j}$

Ans.
(2)

$\vec{E} \times \vec{B} gives direction of \vec{V}$

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Solution

Q. The electric field of an electromagnetic wave in free space is represented by E→=E0cos(ωt-kz)i^. The corresponding magnetic induction vector will be

1 B→=(E0C)cos(ωt-kz)j^

2 B→=(E0C)cos(ωt-kz)j^

3 B→=E0cos(ωt+kz)j^

4 B→=-(E0C)cos(ωt-kz)j^

Ans. (2) E→×B→ gives direction of V→