SSC MTS EXAM

Detailed explanation-1: -When you rub a balloon with a wool cloth, the balloon captures electrons from the wool, leaving the balloon with a negative charge and the wool with a positive charge. If both balloons are rubbed with wool, they will both have same charge (negative) and therefore will repel each other.

Detailed explanation-2: -If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. As a result opposite charges attract each other: The electric field and resulting forces produced by two electrical charges of opposite polarity.

Detailed explanation-3: -Wool is a conductive material, which means it readily gives away its electrons. Consequently, when you rub a balloon on wool, this causes the electrons to move from the wool to the balloon’s surface. The rubbed part of the balloon now has a negative charge.

Detailed explanation-4: -As the balloon gains more and more electrons it ends up with a negative electric charge. The glass/jumper/hair in our experiment has lost its electrons so now has the opposite charge – a positive electric charge. Opposite charges attract and so there’s a small force that pulls the balloon towards the jumper or glass.