In the realm of physics, understanding the fundamentals of electricity is crucial, and this holds particularly true for students preparing for competitive exams like JEE Main. This introduction serves as a gateway to comprehending all the essential electricity formulas from Class 10. From Ohm’s Law to power calculations, formulas of electricity class 10 lay the foundation for solving intricate problems. As we delve into this comprehensive compilation, students will gain a holistic perspective on the principles governing electrical phenomena, providing them with the tools needed to excel in their JEE Main examinations.
Here are the essential electricity class 10 formulas for electricity for the JEE Main exam:
- Ohm’s Law
Ohm’s law is a fundamental principle in electricity that states that the current through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.
Formula:
I = VRVR
where:
(I) is the current in amperes (A),
(V) is the voltage in volts (V),
(R) is the resistance in ohms (Ω)(Ω)
- Resistance
Resistance is a measure of a material’s opposition to the flow of electric charge. It is measured in ohms (Omega)$ .
Formula:
R = ρlA���
where:
(R) is the resistance in ohms (Ω)(Ω) ,
(ρ)(�) is the resistivity of the material in ohm-meters (Ω⋅m)(Ω⋅m) ,
(l) is the length of the conductor in meters (m)(m) ,
(A) is the cross-sectional area of the conductor in square meters (m2)(m2)
- Resistivity
Resistivity is a property of a material that describes its resistance to the flow of electric charge. It is measured in ohm-meters (Ω⋅m)(Ω⋅m) .
Formula:
ρ=1σ�=1�
where:
(ρ)(�) is the resistivity of the material in ohm-meters (Ω⋅m)(Ω⋅m) ,
(σ)(�) is the conductivity of the material in siemens per meter (S/m).
- Current
Current is the rate of flow of electric charge through a conductor. It is measured in amperes (A).
Formula:
I = Qt��
where:
I is the current in amperes (A)
Q is the charge in coulombs (C)
t is the time in seconds (s)
- Voltage
Voltage is the electrical potential difference between two points in a circuit. It is measured in volts (V).
Formula:
V = WQ��
where:
V is the voltage in volts (V)
W is the work done in joules (J)
Q is the charge in coulombs (C)
- Power
Power is the rate at which work is done. It is measured in watts (W).
Formula:
P = Wt��
where:
P is the power in watts (W)
W is the work done in joules (J)
t is the time in seconds (s)
Leave a Reply