Question Text
Question 1 :
By which instrument the presence of magnetic field at a point can be detected by -
Question 2 :
The strength of the magnetic field produced around the current carrying wire is---
Question 3 :
On reversing the direction of current in a wire the magnetic field produced by it:
Question 4 :
At neutral point the value of magnetic field due to current carrying wire {tex}(B_w){/tex} and the value of magnetic field due to earth {tex}(B_e){/tex} are related as
Question 5 :
A current carrying solenoid behaves as a bar magnet. Is it true or false?
Question 7 :
To create electromagnet we use soft iron. Is it true or false?
Question 18 :
By reversing the direction of current in an electromagnet, the magnetic field produced by it
Question 19 :
A new cell is marked 1.5 V. When connected to an external resistance, the voltmeter connected to its terminals reads 1.2 V. The drop in potential across the terminals of the cell is due to the :
Question 20 :
An electric appliance has a rating of 1000 W – 200 V. The resistance of the element of electric appliance is :