Home›MPPSC Forest›State Forest Service Mains Exam›Section 'B': Forestry and General Science›UNIT-07: Physics›Electricity and its effects: Electric intensity, potential, potential difference, electric current, Ohm's law, resistance, specific resistance, factors influencing resistance, combination of resistance (numerical examples), thermal effect of current and its use, calculation of power and electrical energy spent (numerical), precautions in electric experiments›What is the SI unit of current density?

What is the SI unit of current density?

20233M#mppsc-forest#pyq#mcq#2023
A.Ohm/m²
B.Coulomb/m²
C.Ampere/m²Correct
D.Ampere m²
Explanation & Solution

Correct Answer: (C) Ampere/m²

Current density is defined as the electric current per unit cross-sectional area. Its SI unit is Amperes per square meter (A/m²), which is a vector quantity representing current flow intensity.

हिंदी में प्रश्न एवं आदर्श उत्तर

धारा घनत्व की एस० आई० इकाई क्या है?

A.ओम/मी²
B.कूलम्ब/मी²
C.ऐम्पीयर/मी²सही
D.ऐम्पीयर मी²

सही उत्तर: (C) ऐम्पीयर/मी²

धारा घनत्व (करेंट डेंसिटी) प्रति इकाई अनुप्रस्थ काट क्षेत्रफल प्रवाहित होने वाली विद्युत धारा है। इसकी एस.आई. इकाई एम्पीयर प्रति वर्ग मीटर (A/m²) होती है।

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