Q. Magnetic field at a point d distance away from long wire due to electric current i in it is ____________

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Q. The force per unit length existing between two infinite parallel conductors is given by ___________

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Q. If the radius of the current carrying conductor increases, what is the effect on the force?

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Q. If current of conductor increases, what is the effect on the force?

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Q. If length of current carrying conductor increases, what is the effect on the force?

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Q. The magnetic field strength of a solenoid can be increased by inserting which of the following materials as the core?

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Q. If a coil is wound around a steel core and electric current is passed through the coil, the steel core acts as a?

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Q. What is the formula for the magnetic field due to a solenoid?

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Q. What happens to the magnetic field in the solenoid when the number of turns increases?

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Q. What happens to the magnetic field in the solenoid when the current increases?

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Q. What happens to the magnetic field in the solenoid when the length of the solenoid increases?

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Q. The current in a solenoid is 30A, the number of turns per unit length is 500 turns per metre. Calculate the magnetic field if the core is air.

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Q. The magnetic field of the solenoid is 18.84mT, the number of turns per unit length is 500 turns per metre. Calculate the current if the core is air.

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Q. The magnetic field of the solenoid is 18.84mT, the current is 30A. Calculate the number of turns per unit length if the core is air.

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Q. What is the expression for force in a current carrying conductor?

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Q. Force in a conductor is__________ to the product of the charges.

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Q. Force in a conductor is __________ to the square of the distance between the charges.

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Q. Calculate the force between two charges having magnitude 3nC and 2nC separated by a distance of 2micro m.

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Q. If the flow of electric current is parallel to the magnetic field, the force will be?

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Q. The ratio of magnetic force to electric force on a charged particle getting undeflected in a field is ______

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