SSC (Marathi Semi-English) १० वीं कक्षा - Maharashtra State Board Important Questions for Science and Technology 1

Draw figure ‘Electric motor’ and working 

Name any four appliances where electric motor is used.

State four most common electrical appliances based on heating effect of electric current. Why do we use finely heated platinum wire in surgery?

State Fleming’s right-hand rule.

State three differences between direct current and alternating current.

State whether the following statement is true or false.

An electric motor converts mechanical energy into electrical energy.

State the right-hand thumb rule.

Explain the construction and working of an electric motor.

Label the four parts of an electric motor

Observe the following figure:

If the current in the coil A is changed, will some current be induced in the coil B? Explain.

Tell the odd one out. Give a proper explanation.

Name the following diagram and explain the concept behind it.

Identify the figure and explain its use.

Write the correct option by observing the figures.

Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.

i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine

Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator

Why does tungsten metal used to make solenoid type coil in an electric bulb?

Observe the following figure which bulb get fuse?

Study the following principle and answer the question.
A force is excreted on the current carrying conductor. The direction of this force depends on both the direction of the current and the direction of the magnetic field. This force is maximum when the direction of current is perpendicular to the direction of the magnetic field.
a) By which law we can determine the direction of force excreted on the current carrying conductor.
b) In which electrical equipment this principle is used.
c) Draw a diagram representing construction of this equipment.
d) Write the working of this equipment in brief.