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Multiple Choice Questions
∇ × ∇ × E is
∇ ∇ .E −∇ ^{2} E
∇ ^{2} E − ∇ ∇ .E
∇ ^{2} .E + ∇ E
∇ .E − E .∇
Unit vector of E is
|E |(a _{x} + a _{y} + a _{z} )
E . E
E × H is
EH cos θ
EH sin θ
EH sin θ a _{n}
EH cos θ a _{n}
E × (A + C ) is
E × C + E × A
E . A + E × C
A . E + C . E
A × × − E × C
Gradient of a scalar is
not defined
a vector
a scalar
not periodic
Divergence of a vector is
not defined
a scalar
a vector
the same as gradient of a vector
The unit of del
does not exist
meter
1/meter
dB
∇ ^{2} operates
only on a scalar
only on a vector
on a scalar and also ...
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