Label the electric cell, switch, and the electric bulb in the circuit shown below. Also label the direction of the flow of electric current.
Important Questions on Electricity and Circuits
Renu spends a lot of her time outdoors. She walks to school in the morning, plays in the school playground in the afternoon, and walks back home in the evening. She notices that the length of her shadow does not remain the same throughout the day.
Do you think Renu is right? Does the length of her shadow really change?
Renu spends a lot of her time outdoors. She walks to school in the morning, plays in the school playground in the afternoon, and walks back home in the evening. She notices that the length of her shadow does not remain the same throughout the day.
Renu is not likely to grow tall or become short during the span of a single day, so why do you think her shadow changes in length through the day?
Renu spends a lot of her time outdoors. She walks to school in the morning, plays in the school playground in the afternoon, and walks back home in the evening. She notices that the length of her shadow does not remain the same throughout the day.
One day, when Renu was running randomly in the playground, Renu found that her shadow had completely disappeared! She looked up to see if the Sun had gone behind a cloud, or if she had strayed under a tree. No, everything was clear! Then, she turned around and found her shadow behind her. Why had Renu's shadow gone behind her?
Renu spends a lot of her time outdoors. She walks to school in the morning, plays in the school playground in the afternoon, and walks back home in the evening. She notices that the length of her shadow does not remain the same throughout the day.
We know that for a shadow to be formed, we need three things: a source of light, an object that obstructs light, and a screen. Can you identify these three things in Renu's case?
