If two protons are moving with speed $$v=4.5 \times 10^5 \mathrm{~m} / \mathrm{s}$$ parallel to each other then find the ratio of electrostatic and magnetic force between them
Assertion : Electron moving perpendicular to B will perform circular motion.
Reason : Force by magnetic field is perpendicular to velocity.
Assertion : A charge particle is released from rest in magnetic field then it will move in a circular path.
Reason : Work done by magnetic field is non zero.
A long straight wire, carrying current $$I$$ is bent at its mid-point to form an angle of $$45^{\circ}$$. Induction of magnetic field (in tesla) at point $$P$$, distant $$R$$ from point of bending is equal to

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