Refer to the example below.
Electric Field, Field Lines and Field Direction
Electric field
Electric field line
Electric field direction
Click here to understand more about electric field, field line and field direction.
Inertia
Click here to understand more about inertia.
Time interval between two sounds from a gun – direct and reflected sound
Solutions: Option B
You can view the video tutorial here or the written solutions below.
Minimum force F to push barrel up a step
Solutions: Option D
You can view the video tutorial here or the written solutions below.
(You can click here to view another post on similar question where angle is given instead)
2013SPp1q17 What is the new P when V across resistor is doubled?
Solutions: C
Alternatively, you may put values to work out using the 2 basic formulae of P = IV and V = IR. Refer the video below.
