SSC (English Medium) 10th Standard - Maharashtra State Board Important Questions

Choose the correct alternative and rewrite the following sentence.

If three resistors 2 ohms, 3 ohms and 4 ohms are connected in series, then the effective resistance in the circuit will be _______ ohms.

Choose the correct alternative and rewrite the following:

You are given three equal resistances. In how many combinations can they are arranged?

The equivalent resistance of a parallel combination of two resistors of 30 Ω and 60 Ω is ______________.

An electric iron rated 750 W is operated for 2 hours/day. How much energy is consumed by the electric iron for 30 days?

When do you say that the resistors are connected in this way? Draw a circuit diagram.

Name any six domestic appliances based on the heating effect of electric current.

Rewrite the following statement by selecting the correct option.

The S.I. unit of resistance is __________.

Rewrite the following statement by selecting the correct option:

1 A = ____________ mA.

Answer the following question:
what is the heating effect of the electric current? state any four applications of it?

The unit of electrical power is _______.

Write two devices based on the heating effect of electric current.

Explain the importance/uses of fuse wire.

Explain the application of heating effect of electric current in an electric bulb with a diagram.

If 220 V potential difference is applied across an electric bulb, a current of 0.45 A flows in the bulb. What must be the power of the bulb?

Tara, after completing her exams, went to her grandmother's house along with her younger brother Rahul. One day, Rahul came home after playing and switched on the fan and air conditioner. At the same time, his grandmother was preparing a milkshake for him using a mixer. Suddenly, they heard a big sound and the electricity of the house got shut down. Tara is called an electrician. He said the main reason for supply to shut down was overloading.

1. What is overloading?
2. Is overloading and short the same? When does short-circuiting take place?
3. How can the effects of overloading be avoided?

Find the odd one out.

In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.

Draw figure ‘Electric motor’ and working 

Name any four appliances where electric motor is used.

When does short circuiting take place?