TS SSC 10th Class Physical Science
English Medium
Important Questions & Answers
Chapters 9 to 12
CHAPTER 9: ELECTRIC CURRENT
Important Formulas
Electric Current:
I = Q / t
Ohm's Law:
V = IR
Resistance:
R = V / I
Electric Power:
P = VI
P = I²R
P = V²/R
Electrical Energy:
E = P × t
🔴 VERY IMPORTANT QUESTION
Q1. What is electric current?
The rate of flow of electric charge through a conductor is called electric current.
Formula: I = Q / t
SI Unit of Current = Ampere (A)
🔴 VERY IMPORTANT QUESTION
Q2. State Ohm's Law.
At constant temperature, the electric current flowing through a conductor is directly proportional to the potential difference across its ends.
V = IR
Where:
V = Potential Difference
I = Electric Current
R = Resistance
🟠 IMPORTANT QUESTION
Q3. What is resistance?
The opposition offered by a conductor to the flow of electric current is called resistance.
SI Unit = Ohm (Ω)
🔴 VERY IMPORTANT NUMERICAL
Q4. Calculate the current if 12 V potential difference is applied across a resistance of 4 Ω.
Given:
V = 12 V
R = 4 Ω
Using Ohm's Law:
I = V / R
I = 12 / 4
I = 3 A
Additional Physical Science Question Bank Material
TS SSC 10th Class Physical Science
Complete Question Bank – Chapters 1 to 12
English Medium
MCQs | 1 Mark | 2 Marks | 4 Marks | Numericals | Model Papers
CHAPTER 1: REFLECTION OF LIGHT AT CURVED SURFACES
Important Formulas
Mirror Formula: 1/f = 1/v + 1/u
Magnification: m = -v/u
📝 MCQs
1. The bouncing back of light is called:
A) Refraction
B) Reflection
C) Dispersion
D) Scattering
2. The SI unit of focal length is:
A) Meter
B) Watt
C) Ohm
D) Volt
1 MARK QUESTIONS
🔴 VERY IMPORTANT
Q1. Define reflection of light.2 MARK QUESTIONS
🔴 VERY IMPORTANT
Q1. State the laws of reflection.2. Incident ray, reflected ray and normal lie in the same plane.
4 MARK QUESTIONS
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