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Current Electricity

Madhya Pradesh Board · Class 12 · Physics

Flashcards for Current Electricity — Madhya Pradesh Board Class 12 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.

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Graphs showing the variation of resistivity with temperature for different types of materials: metals, semiconductors, and alloys.
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56 Flashcards
Card 1Electric current

State the steady current formula and the general instantaneous current formula.

Answer

Steady current: I = q/t, where q is net charge and t is time interval. General instantaneous current: I(t) = lim_{Δt→0} ΔQ/Δt, where ΔQ is net charge across a cross-section in time Δt. Unit: ampere (A

Card 2विद्युत धारा

स्थिर धारा का सूत्र और सामान्य तात्क्षणिक धारा का सूत्र बताइए।

Answer

स्थिर धारा: I = q/t, जहाँ q शुद्ध आवेश है और t समय अंतराल है. सामान्य तात्क्षणिक धारा: I(t) = lim_{Δt→0} ΔQ/Δt, जहाँ ΔQ समय Δt में किसी अनुप्रस्थ काट के पार शुद्ध आवेश है. इकाई: ampere (A).

Card 3विद्युत धारा

धारा को अदिश राशि क्यों माना जाता है?

Answer

धारा अदिश है, यद्यपि इसे परिपथ आरेखों में तीर के साथ दिखाया जाता है। इसे प्रति इकाई समय में शुद्ध आवेश प्रवाह के रूप में परिभाषित किया जाता है और यह सदिश योग का पालन नहीं करती। किसी क्षेत्र से होकर धा

Card 4Electric current

Why is current considered a scalar quantity?

Answer

Current is a scalar although it is shown with an arrow in circuit diagrams. It is defined through the net charge flow per unit time and does not follow vector addition. The current through an area can

Card 5Electric current

A conductor carries 3.0 C of charge in 1.5 s. Find the current.

Answer

Given: q = 3.0 C, t = 1.5 s Formula: I = q/t Step 1: I = 3.0 C / 1.5 s Step 2: I = 2.0 C/s Answer: I = 2.0 A

Card 6विद्युत धारा

एक चालक 1.5 s में 3.0 C आवेश वहन करता है। धारा ज्ञात कीजिए।

Answer

दिया है: q = 3.0 C, t = 1.5 s सूत्र: I = q/t चरण 1: I = 3.0 C / 1.5 s चरण 2: I = 2.0 C/s उत्तर: I = 2.0 A

Card 7धारा का परिमाण

एक औसत बिजली चमक में कई दस-हज़ार ampere धारा होती है, जबकि तंत्रिका धाराएँ microamperes में होती हैं। इससे क्या पता चलता है?

Answer

यह प्रकृति और दैनिक जीवन में विद्युत धारा की बहुत व्यापक सीमा दिखाता है। बड़ी धाराएँ बिजली चमक में होती हैं, जबकि बहुत छोटी धाराएँ तंत्रिकाओं में होती हैं। धारा के लिए प्रयुक्त इकाई ampere है।

Card 8Scale of current

An average lightning carries tens of thousands of amperes, while nerve currents are in microamperes. What does this show?

Answer

It shows the very wide range of electric current in nature and daily life. Large currents occur in lightning, while very small currents occur in nerves. The unit used for current is the ampere.

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What are the important topics in Current Electricity for Madhya Pradesh Board Class 12 Physics?
Current Electricity covers several key topics that are frequently asked in Madhya Pradesh Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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