Category: 3. TGT (Non-medical) HP

The magnetic field at a distance r from a long straight current-carrying wire varies as A 1/r² B r C

In electrostatics, the curl of electric field equals A charge density B magnetic flux C zero D potential Explanation Electrostatic

The electric potential satisfies Laplace’s equation in a region when A charges are present B free charge density is zero

A region where ∇×E⃗ = 0 implies A electric field is non-conservative B electric field is conservative C magnetic field

The electrostatic field is defined as A E⃗=−∇V B E⃗=∇V C E⃗=∇2V D E⃗=−∂V/∂t Explanation In electrostatics, the field is

Time period of SHM depends on: A Initial phase B Initial displacement C System parameters D Energy of the system

A body in SHM crosses the mean position every: A T B T/2 C T/4 D 2T Explanation It crosses

The equation of SHM is x=Asin⁡(ωt+ϕ)x = A\sin(\omega t + \phi)x=Asin(ωt+ϕ). The quantity ϕ\phiϕ is called: A Angular velocity B

Which of the following is the correct condition for SHM? A Restoring force ∝ velocity B Restoring force ∝ displacement

If the length of a wire is doubled while radius remains same, its extension under same load will: A Reduce