CBSE Class 10 Answered

The magnetic field produced by a solenoid depends on the current running through it (increases with increases current), The number of turns of wire (increased turns -> increased B field strength). The substance at the core of the field also has an effect, though it depends on the core's nature.

 The force on a current carrying wire in a magnetic field can be found by  using your RIGHT HAND...the palm is force, thumb is current and fingers (at right angles to thumb) are field direction... got it

regards

toppers expert