Electromagnetic Field Theory Ohm’s law in point from field theory can be expressed as R = ρ × ( l / A). J = σE. J = E / σ. V = IR. R = ρ × ( l / A). J = σE. J = E / σ. V = IR. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is 0.015 joule. 0.015 joule. 0.15 joule. 1.15 joule. 0.015 joule. 0.015 joule. 0.15 joule. 1.15 joule. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetic flux density emerging out of a closed surface is infinite. depends on magnetic movements inside the closed surface. zero. depends on magnetic movements outside the closed surface infinite. depends on magnetic movements inside the closed surface. zero. depends on magnetic movements outside the closed surface ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will increase. decrease. remain the same. initially increase and then decrease. increase. decrease. remain the same. initially increase and then decrease. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position 5 × 10-5 uy N. 5 × 10-5 ux N. 5 × 10-5 uz N. - 5 × 10-5 uy N. 5 × 10-5 uy N. 5 × 10-5 ux N. 5 × 10-5 uz N. - 5 × 10-5 uy N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Electric field strength of charge Increase distance. Decrease with distance. Decrease with square distance. Increase square distance. Increase distance. Decrease with distance. Decrease with square distance. Increase square distance. ANSWER DOWNLOAD EXAMIANS APP
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