The gradient of the magnetic vector potential can be expressed as

1.	The gradient of the magnetic vector potential can be expressed as
A.	‚Äö√Ñ√∂‚àö√ë‚àö¬®‚âà√≠¬¨‚à´‚âà√≠¬¨¬µ dV/dt
B.	+‚âà√≠¬¨‚à´‚âà√≠¬¨¬µ dE/dt
C.	‚Äö√Ñ√∂‚àö√ë‚àö¬®‚âà√≠¬¨‚à´‚âà√≠¬¨¬µ dA/dt
D.	+‚âà√≠¬¨‚à´‚âà√≠¬¨¬µ dB/dt
Answer» B. +‚âà√≠¬¨‚à´‚âà√≠¬¨¬µ dE/dt

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