Class 10th

  EXPERIMENTAL VERIFICATION OF OHM'S LAW OBJECTIVE:-  Verification of ohm's law  EQUIPMENT REQUIRED :- A battery, an ammeter, voltmeter, rheostat, plug key, coil, of unknown substance, connecting wire etc.  THEORY :- Ohm's law deal with the relationship between voltage (p.d) and current in an ideal conductor.  This relationship states that -  The p. d.(voltage) across an ideal conductor is directly proportional the current through it.  Ohm's law given by  V=IR Where,  V= potential difference  I= current  R= constant (Resistance)  CIRCUIT DIAGRAM :-  PROCEDURE:- 1. The circuit is connected as per the circuit diagram. 2. The plug key is inserted and the rheostat is adjusted so that a definite amount of current (I) flows in the circuit. This value of current is recorded. 3. As the current flows through the unknown resistance a p. d. is developed which is read from voltmeter. 4. The procedure is again adjusted to a different v...

ELECTRICITY CLASS 10 Q.) What is electricity?  Ans:- Electricity is the form of energy.  Or ➡️Electricity is the flow of electrons.  ➡️Electricity is the flow of electrical power or charge.  Q.) What is charge?  Ans:- That property of matter due to which they exert electrical forces on each other, called charge.  ➡️It is an intrinsic property.  ➡️Intrinsic :- It can't be removed.  ➡️ Charge at rest :- produces only electrical effect.  ➡️Charge in motion :- produces both (i) Electrical and (ii) Magnetic effects.  Q) What is an electric charge? Is it a scalar or vector quantity? Give S.I . unit.  Ans:- Electric charge is a physical quantity which causes electric force in matter.  ➡️Charge is denoted by Q/q.  ➡️The electric charges at rest are known as static charge.  ➡️Charge is a scalar* quantity. ➡️SI unit of charge is coulomb (C).  ➡️Dimensional formula of charge is [AT].  Types of charge