Question

Screw Rule is analogous to:
A. Right hand thumb Rule
B. Left hand Fleming rule
C. Magnetic force between two current carrying wires
D. Faraday’s law

Answer 1

Hint: Learn the definition of screw rule and right hand thumb rule then compare these two rules. Also learn left hand Fleming rule, Magnetic force between two current carrying wires and Faraday’s law and compare with screw rule and find Screw Rule is analogous to which option.

Complete step by step answer:
Definition of screw rule -
Screw is placed as a conductor, as we know that conductor conducts electricity. When screw is rotated then the direction of rotation is taken as the direction of magnetic fields and the direction in which screw is placed is taken as direction of current.
The right hand thumb rule is a way to predict the direction of a force in a magnetic field. To predict the behavior of positive charges, use your right hand. To predict the behavior of negative charges, use the left hand. Thumb points in the direction of the velocity and fingers point in the direction of the magnetic field, palm points in the direction of the force.
From the above definition of screw rule and right hand rule, it is clear that Screw Rule is analogous to Right hand thumb Rule. Both the rules give the direction of the magnetic field.
Hence, option A is correct.

Note: Screw Rule, right hand thumb rule, left hand Fleming rule, Magnetic force between two current carrying wires and Faraday’s law are very important topics in physics specially for magnetic field chapters. Learn all these rules.